如果測量一個人的細胞數量,事實上只有25%是屬於人體細胞,其餘的75%均由細菌及真菌所據。2087Please respect copyright.PENANAHFMMdAoNif
2087Please respect copyright.PENANAHNwaT0bGnS
細菌及真菌可以說是「無處不在」,它們不但寄宿於我們的皮膚外層,亦同時駐紮在我們身體內的腸道及各器官部位,與我們成呈共生關係。2087Please respect copyright.PENANAMzfoszSjE1
2087Please respect copyright.PENANAvVx21xgQ1g
最近有科學家發表學術文章(Ref1),講述位於汗腺附近的細菌就是腋下異味的其中一個元兇。2087Please respect copyright.PENANAlyaaChUxEN2087Please respect copyright.PENANApuVdUCu5GN
2087Please respect copyright.PENANAssvl7km9A1
(圖1)我們身體的肝腺大致分為兩種,外分泌汗腺(Eccrine Sweat Glands)及大汗腺2087Please respect copyright.PENANAbW2tWvZKty
(Apocrine Sweat Glands)2087Please respect copyright.PENANAgr9votFWz5
2087Please respect copyright.PENANAzJBl0B8aCg
前者接近遍佈全身,不與毛髮連接。後者主要位於腋下、乳頭及私處部位,與毛髮連接。2087Please respect copyright.PENANAlLzU20X56a
2087Please respect copyright.PENANAajvRxJ4BDd
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2087Please respect copyright.PENANALpbZXYCQB6
2087Please respect copyright.PENANAGttvu3HznI
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2087Please respect copyright.PENANAsjaKIGWLNM
2087Please respect copyright.PENANAfyuJwUuiZI2087Please respect copyright.PENANARPTRvyZyPs
2087Please respect copyright.PENANAIqVJKkejpt
(圖2)下列三點為文中所找出的異味散發機制。2087Please respect copyright.PENANAQWzxb4KbjJ
2087Please respect copyright.PENANAeh4zfrfB62
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2087Please respect copyright.PENANAqw1wdKxLzV
2087Please respect copyright.PENANABLVIXL80Uo
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2087Please respect copyright.PENANAGw9vQCz7kI
2087Please respect copyright.PENANAror2ZFUMRY
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2087Please respect copyright.PENANAWhpY1PkYXH
2087Please respect copyright.PENANAZSHE9Ctj1m
換句話說,腋下的異味就是由這些細菌引致而成的。2087Please respect copyright.PENANAmUufoIOqTx
2087Please respect copyright.PENANAQk8UyEnubT2087Please respect copyright.PENANAWNVZbNjLmn
2087Please respect copyright.PENANA2HZo20S56u
(圖3)為作進一步的證實,科學家利用黃金葡萄球菌作對照實驗。2087Please respect copyright.PENANAtPdehDMiSU
2087Please respect copyright.PENANAUjb3O6CmPe
他們發現人葡萄球菌的近親黃金葡萄球菌並沒能夠將無味的Cys-Gly-3M3SH消化成為帶有異味的3M3SH。2087Please respect copyright.PENANAn1fwSKCikN
但是,當把人葡萄球菌其中一隻酵素轉移到黃金葡萄球菌後,無味的Cys-Gly-3M3SH便能夠被消化成為帶有異味的3M3SH,證實異味是由那隻酵素所致。2087Please respect copyright.PENANAt6Ax1lE7KW
2087Please respect copyright.PENANAioEyfGpwVI
這隻酵素一直以來並沒有被前人發現,亦即是說,只要能夠研發出抑制那隻酵素的止汗劑的話,腋下的大部份異味亦能得以除去;2087Please respect copyright.PENANAt4luKzNnWv
2087Please respect copyright.PENANANDUX8eVVEH
異味的產生,基本上是由硫醇(Thioalcohol)及脂肪酸(Fatty acid)而成。此文章所談及的機制純屬與硫醇的產生有關,沒有觸及脂肪酸那一方面。2087Please respect copyright.PENANAqwhRYTcRCv
2087Please respect copyright.PENANAm1w5QL4GfN
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2087Please respect copyright.PENANAfDj3H7Sc3I
2087Please respect copyright.PENANAgLLG3I7VFp
2087Please respect copyright.PENANAAP2uN68Ikg
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。2087Please respect copyright.PENANAWAQ8Vgniep
2087Please respect copyright.PENANAPWYQcvGGau
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc2087Please respect copyright.PENANATNo6G1bsFU
2087Please respect copyright.PENANA6SHNm4XV5p
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。2087Please respect copyright.PENANA5ID8HD6smP
2087Please respect copyright.PENANAvAymPUtBdU
Link:2087Please respect copyright.PENANAtMaNJxDA0B
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2087Please respect copyright.PENANAt46X6y9MFg
2087Please respect copyright.PENANAMvYzmH4gLx
2087Please respect copyright.PENANAXjD36Nk1qt
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2087Please respect copyright.PENANAa6NIJ9wRGj
2087Please respect copyright.PENANAzfTsD4vf4l
Ref1:https://www.nature.com/articles/s41598-020-68860-z2087Please respect copyright.PENANA0QNzCaP9eR
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科普專欄–薯不揀單
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科普專欄–薯不揀單
Author:
薯仔聞茱莉

ISSUE #24
深入淺出–腋下異味的來源
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